CVE-2022-33747

Name
CVE-2022-33747
Description
Arm: unbounded memory consumption for 2nd-level page tables Certain actions require e.g. removing pages from a guest's P2M (Physical-to-Machine) mapping. When large pages are in use to map guest pages in the 2nd-stage page tables, such a removal operation may incur a memory allocation (to replace a large mapping with individual smaller ones). These memory allocations are taken from the global memory pool. A malicious guest might be able to cause the global memory pool to be exhausted by manipulating its own P2M mappings.
NVD Severity
low
Other trackers
Mailing lists
Exploits
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
MISC https://xenbits.xenproject.org/xsa/advisory-409.txt
CONFIRM http://xenbits.xen.org/xsa/advisory-409.html
MLIST http://www.openwall.com/lists/oss-security/2022/10/11/5
FEDORA https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XWSC77GS5NATI3TT7FMVPULUPXR635XQ/
DEBIAN https://www.debian.org/security/2022/dsa-5272
FEDORA https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TJOMUNGW6VTK5CZZRLWLVVEOUPEQBRHI/
FEDORA https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/

Match rules

CPE URI Source package Min version Max version
cpe:2.3:o:xen:xen:*:*:*:*:*:*:arm:* xen == None == None

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
xen 3.16-main 4.16.2-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.13-main 4.14.5-r7 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen 3.15-main 4.15.4-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.14-main 4.15.4-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
xen 3.17-main 4.16.2-r2 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
xen edge-main 4.16.2-r3 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable